1. Department of Physiology, College of Medicine, University of Kentucky, Lexington
2. Department of Neurology, Stroke Program, Sanders-Brown Center on Aging, University of Kentucky, Lexington; and †Stroke Program, Sanders-Brown Center on Aging, University of Kentucky, Lexington
3. Department of Neurology, CNS Growth Factor Research Laboratory, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, U.S.A.